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Related Experiment Videos

Multiple basal cell carcinoma developing two years after 60Co irradiation

I Iwamoto1, M Endo, H Kakinuma

  • 1Department of Dermatology, Surugadai Nihon University Hospital, 1-8-13 Kanda-Surugadai, Chiyodaku, Tokyo 101, Japan.

European Journal of Dermatology : EJD
|July 3, 1998
PubMed
Summary

A patient developed multiple basal cell carcinomas after radiation therapy for oropharyngeal tumors. The short latency period was likely due to a high radiation dose and sun-exposed treatment area.

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Area of Science:

  • Oncology
  • Dermatology
  • Radiation Oncology

Background:

  • Basal cell carcinoma (BCC) is a common skin cancer.
  • Radiation therapy is a known risk factor for secondary malignancies.
  • Iatrogenic BCC development following radiotherapy requires further investigation.

Observation:

  • A 66-year-old Japanese male patient developed multiple BCCs.
  • The BCCs appeared 2 years after cobalt-60 (60Co) irradiation for oropharyngeal tumors.
  • Affected skin areas exhibited atrophy and telangiectasia within the radiation fields.

Findings:

  • The patient received a substantial total dose of 112 Gy of 60Co radiation.
  • The observed latency period of 2 years is notably shorter than typically reported for radiation-induced BCC.

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  • Tumor development occurred in a sun-exposed region previously treated with radiotherapy.

    • Implications:

    • High radiation doses may shorten the latency period for secondary BCC development.
    • Sun-exposed irradiated areas might be more susceptible to radiation-induced skin cancers.
    • This case highlights the importance of long-term dermatological surveillance in patients treated with radiotherapy.